Contributor: Ranjit Lingaiah

MapR Converge Blog author, Ranjit Lingaiah

Ranjit has over 20 years of experience working with Java, Node.js and JavaEE in many roles of the software development, including design and development. Prior to MapR, Ranjit worked at PayPal developing Hosted Sole Solution, Checkout application and Onboarding platform. Prior to PayPal, Ranjit worked as a Software developer at Sun Microsystems for over 15 years, where he developed Sun remote services and Common Desktop Environment for Solaris. Ranjit holds a MS in Computer Science from University of North Carolina at Charlotte.

Blog Posts by Ranjit Lingaiah

March 12, 2019 | By Ranjit Lingaiah

MapR Data Platform Installation On Rancher Kubernetes

Introduction Most projects these days require a Kubernetes cluster; it is a proven tool for managing and deploying Docker-based containers in production environments. These containers in a Kubernetes environment are short-lived and stateless. When containers...

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February 12, 2019 | By Ranjit Lingaiah

How to Use Secondary Indexes in Spark With Open JSON Application Interface (OJAI)

Introduction Starting with MapR 6.0, MapR Database supports secondary indexes on fields in JSON tables. Indexes provide flexibility to access data stored in MapR Database JSON. Secondary indexes provide efficient access to a wide range of queries on...

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January 06, 2017 | By Ranjit Lingaiah

Processing Image Documents on MapR at Scale

There has been a lot of research in document image processing over the past 20 years, but not much research has been done in terms of parallel processing. Some of the solutions proposed for parallel processing have been to create threads of execution...

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January 25, 2016 | By Ranjit Lingaiah

Secondary Indexing for MapR Database using Elasticsearch

In the wide column data model of MapR Database, all rows are stored by a row key, column family, column qualifier, value, and timestamps. In the current version, the row key is the only field that is indexed, which fits the common pattern of queries based...

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